PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/23-12:42:50
G02     45.8           44.4                4.8 +/-    1.61       6.5 +/-    1.61  0.050 / 0.040
G05     104.9          70.6                6.0 +/-    0.65       6.3 +/-    0.65  0.040 / 0.050
G12     188.3          50.4                8.0 +/-    1.19      10.0 +/-    1.19  0.040 / 0.040
G25     256.7          60.1                5.4 +/-    1.59       6.1 +/-    1.59  0.040 / 0.040
G29     318.5          40.9                4.6 +/-    1.53       6.6 +/-    1.53  0.030 / 0.020